From: David Cermak <david@Davids-MacBook-Pro.local>
Date: Tue, 22 May 2018 09:10:27 +0000 (+0200)
Subject: Fixed nullptr dereference in MDNS.c
X-Git-Tag: v3.1-beta1~95^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fffbf7b75065b5852e064e04b0c5102dd0fc2244;p=esp-idf

Fixed nullptr dereference in MDNS.c
---

diff --git a/components/mdns/mdns.c b/components/mdns/mdns.c
index 73c5f99c9f..8ead7c44d5 100644
--- a/components/mdns/mdns.c
+++ b/components/mdns/mdns.c
@@ -2269,7 +2269,7 @@ static bool _mdns_question_matches(mdns_parsed_question_t * question, uint16_t t
         }
     } else if (type == MDNS_TYPE_SRV || type == MDNS_TYPE_TXT) {
         const char * name = _mdns_get_service_instance_name(service->service);
-        if (name && !strcasecmp(name, question->host)
+        if (name && question->host && !strcasecmp(name, question->host)
             && !strcasecmp(service->service->service, question->service)
             && !strcasecmp(service->service->proto, question->proto)
             && !strcasecmp(MDNS_DEFAULT_DOMAIN, question->domain)) {